Struct differential_dataflow::trace::wrappers::freeze::BatchFreeze

pub struct BatchFreeze<K, V, T, R, B, F> { /* fields omitted */ }

Wrapper to provide batch to nested scope.

Implementations

impl<K, V, T, R, B, F> BatchFreeze<K, V, T, R, B, F> where
    B: BatchReader<K, V, T, R>,
    T: Clone,
    F: Fn(&T) -> Option<T>, 

pub fn make_from(batch: B, func: Rc<F>) -> Self

Makes a new batch wrapper

Trait Implementations

impl<K, V, T, R, B, F> BatchReader<K, V, T, R> for BatchFreeze<K, V, T, R, B, F> where
    B: BatchReader<K, V, T, R>,
    T: Clone,
    F: Fn(&T) -> Option<T>, 

type Cursor = BatchCursorFreeze<K, V, T, R, B, F>

The type used to enumerate the batch’s contents.

fn cursor(&self) -> Self::Cursor

Acquires a cursor to the batch’s contents.

fn len(&self) -> usize

The number of updates in the batch.

fn description(&self) -> &Description<T>

Describes the times of the updates in the batch.

fn is_empty(&self) -> bool

True if the batch is empty.

fn lower(&self) -> &Antichain<T>

All times in the batch are greater or equal to an element of lower.

fn upper(&self) -> &Antichain<T>

All times in the batch are not greater or equal to any element of upper.

impl<K, V, T: Clone, R, B: Clone, F> Clone for BatchFreeze<K, V, T, R, B, F>

fn clone(&self) -> Self

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.